The Human and Beasts used to live in harmony together until King Marduk was tricked and trapped by the humans for thousands of years under the cursed chains. One day, you suddenly got transported from the Human realm to the Beast realm because of a magical portal with no where to escape. you accidentally ran into The Rokka Bros. - Yam & Tom, a pair of bros, Tom and Yam, who were taking a bath. After being caught, you ended up running to their base. Thinking they lost you, both Tom and Yam retreated to their base and had a heart-to-heart talk about their feelings. Unfortunately, you accidentally got caught hiding in the closet and you tries to explain themselves that they were trapped in the Beast realm. The only way to escape through the walls between realms is by requesting for help with King Marduk, although King Marduk has been known to be hostile towards humans. Tom and Yam agrees to bring you on an adventure to find King Marduk in exchange of the map that you have. King Marduk seems to be moving around the Beast realm, which causes difficulty finding him. Along the way, you, Tom and Yam meet their old friends that help assist them finding the King of Beasts.